Felix mcgaethy



F. MGUARTHY.. SPEED ANN PRESSURE REGULATOR PUE ELGWINE ENGINES,

:1N gsg rum INN||NINN 1 1,1, @Hozwmfl HHH HHN..

2 Shams-Sheet l.

l Patented my 1o, 1888.

2 Sheets-Sheet 2,.

(No Model.)

N MOCARTHY. SPEED AND PRESSURE REGULATOR EUR BLOWING ENGINES No. 385,941.

`Patelflted July 10, 1888 Tb L35 whom it may concern:

. nre Regulators forBlowingEngines; IandI do V stop the blowing-engine il.' thc engineer is etean'l it the moment the baelcnxessnrc, ac# cnmnlates at the tnyeren.` At othcrt-imes the linirn STATES 'remit inconnrnr, on rorrs'rowmn'ssrenon onrnn'r ,TO'THEWEIMEH Mnci-nnn wenns COMPANY; on LEBANOILAND-*EDGAR S-COOK` vANP `remco nier-nner, or rorfrsrown,rnnnsYLvAnIA. l

eieren Ann rnessnne REGuLATon FoRfBLowlN" nnnorrronn-mn forming paafof' Lederwaren No. 385,941, einen Jury 1o, man.

Application tiled January l12, 1888. Serial No.2(l0.55. {Ho model.) y, l

Be it known vthat {FELIX McCImTHY,a citizen of the United States, residing at Potts" town, in the county of Montgomery andState of Pennsylvania, have invented certain new and useful Improvements in Speed and Presshereby declare the following to' be a full, clear, and exact dencripiion of the invention, such an will enableothers skilled in the art to which it appertaine to inakcnnd nsethe same. l'llyinvention relates to means for regulating the sinned and pressure of blowingengines need for snpplyingair to blastffm'naces.

lnvthe practice of ,operating blast-.furnaces it is a matter el frequent occurrence thatthc blast in the furnace is subject to changes of 'incre or lees violence, caused by the slipping of the stock, which obstrnets the-,mouth of the tulveres or hlowpipes through which the blast is delivered from the blowing engine into theinterior ofi the furnace. Sliding of the stock, occnsiioncd by scal'oids in the,` furnace Uriving awayoryielding to the weight.l o f theetoclr resting upon them, increases the density ofthe etoclr, so as to greatly augmentI the pressure of the blast atl the ,'tnyeres, and l at times the pressure is so augmented asto `not atrthc throltlel--valvc to turn en niore accumulated prensnre is so great as `,to stopthc engine and allen tlic blovpipes to fill with liqnid nlag, which causen great trouble land labor en well an the iiaste of ltime to again g etorc the aiieciediais to their normalconfl dition.,` f

Sncl1`-being the dilicnltien attending the o perntioin of blantfnrnnccs under the present; practice, "my invention has for its object the eonntinctien ci means to. overcome `said difficulties and cante the engine to deliver blast` to':therllnrnaecat anniorni `predetermined phend 'er l l "t llhr. nven tion `will be hereinafter ,deecribcm I PATENT .y

, l a part of this specification, Figure 1 represents and irtrtienlarlv pointed ontinithe channel,A

.the accompanying drawngsflwhieh form'.

a side elevation of aWeimerh blowingien'gney 5o v y withm y inventionifor regulating thespeed and .pressure applied thereto, and- Fig.` 2v'a detail sectional View. v Reference being had to the Vdrawn s and theletters marked thereon", A repre ents m55 liluid-pressure regulating cylinder, theinte-vv rior of which is accurately bored Aand pro-, vided with a piston, a, having a cnp leather packing, ,6.1 o

The head ofthe piston a is provided withag 6o long hollow rod, c, and terminateswith a y flange, d, which is secured to chend-wheel, B,

by an annnlardsk, c, bolted to the underside of thehubrof. said wheel. The lower end of the cylinder. A is provided with a-head, ,1,,65gn

from-,the inner surface of which projects an annular rimy; g, which forms a seat for vthe piston a when the engine is at rest, and provides .a inidchamber, h, belowthe piston when raised fromlits seat for the receptionof air- 7o frony the blowingcylinder c, whichis supplied through a pipe, t'. To the upper endof the bored cylinder A is,

attached an funbored extension, D, which terr minates in a thick head, k, screw'threaded on 75" its interior to receive .an externally-,screwthreaded 'gland,' Z, which is providf'ed withai ,handwheeh E iat itsnpperend. Around 'the hollow piston-rod c is coiled a spring', n,w 11ic'h extends from the top ofthe piston a tothe 8o head k of the extension D of the cylinder A, 'bears against the lower end of theA gland Land lisfmniipresased thereby, as will hereinafter `ancre fully appear. VThe hand-wheel B isliro` vided with a central aperture, o, whicliisI 85 scrcwthreaded to receive the screwfthreaded 'lower lend of arod, p, to which isattached a leverrg, 'fnlcrumcd ,at r on a bracket, s, and' connected'tothe'rod t ofc piston-throttle valve, E, attached tothesteamsnpply pipe E, 9o leading to the lsteamchcst ofthejengiue-cylindert'r.V -Zf i ,l Thenpper end ot' the rod p is'screwthreaded' atimland passes loosely throngh a Vvyoke,v c, to'

' pipe I, which connects the two, ends of the Should the slip of4 thc stock in the furnace? ,'fbei'crc the valve E hns been thus fully opened "thc'nut b on therod i will have come in conlThe engine having been started, by opening rod p and the lever @opens the throttle-valve Should any'slip of stock now occuriin the, furwhich are attached links @which are connected tothe arm .r ot' a buttertiy-valve, H, in the blowing-..cyl inder and forms ay bypass for transferring the air-compressed by the'piston of said cylinder from one end to the other when the blow-pipes or tuyeresbecome obstructed by the slipping ot' the stock in the 'furnace und prevents the discharge of" the blastinto thc furnace. Onthe screw-threaded portion ot' the rod p are nuts c.' b', provided with suitable juin-nuts, c d', and which nuts u b operate upon the yoke L* to open and close v the'valve H as the pressure of the blast be-f comes excessive in the blow-pipes or tuyeres'; oi" the furnace. K is the main steam-supply valve. The several parts being constructed substantially as described,the operation is as follows:

the valve Kand raisins,v the rod p suiiiciently high, by means ofthe hand-wheel B, to allow steam to pass through the piston throttleval ve E, air from the blowing-cylinder C; iinmcdiately enters the cylinder A of the regulator below the piston a throughpipe i. 1t is now desired to bring the speed of the engine to a predetermined number of revolutions per minute, which is accomplished in the i'ollowing manner: The air from the blowing-cylinder C, pressing upon the under side, of the piston a. in the cylinder A, moves the; piston and its hollow rod c upward, compresses the Spiral springs n, and, through the medium of E still farther. Now, by turning the handwheel B, which controls the length of the rod p, and turning the hand-wheel B', which controls the tension of the spring n, a' medium will bc obtained between the pressure of the air under the piston (l. and the tension of the spring n above the piston that will control 'the steam passing through the throttle-Valve E, and give to the engine the number of revolutions desi red. The main steam-suppl y valve K has in the meantime been opened wide.

nace, augmenting the pressure of the blast, such increased pressure will act on the piston a in the cylinder A, compress the spring n,

unove the rod p upward, and open the throttlc-valve E, until an equilibrium is restored and the .speed of the engine maintained.

have been of such violence as to augment thc pressure of the blast beyond the power ot' the steam-cylinder of the engine, the piston a in the cylinder A will still farther compress the spring n, move the rod 7i farther upward, and icnthe throttle l to its full capacity; but

tact with the lower side of the yoke 7J, and opened the buttcrtly-valve H in' the pipe l, and established cnmnnniication between the two ends ci the Murriiig-cylinder, thus relievfsubstantially as described.

a throttle-valve, and a rod provided with an ing the piston of back-pressure and prevent--y ing ,the engine from stopping, while the full.. maxqirnum pressure 'of the blast is maintained j in the furnace, so'as to prevent the cinder fron'. 7c backing into the blow-pipes in thc tuyeres. When the excess of pressure in the furnace is relieved, the resiliencyv of the spring n wilt force the piston e down and restore the valves :E and H to their normal positions. Should 7';

`any airl pass the pistou a in the cylinder A, it ,will escape between the Walls of the rod c and the-gland Z,- but to secure a ready means of escape for it a small hole may be `drilled through the upper head oi" the cylinder.

Having thus fully described my invention. what I clainufis--J 1. A Vpressureregulating cylinder having a piston operated in both directions by a yielding pressure within the cylinder, incombination with an adjustable rod connected to said piston and tof a relief-valve and a t-hrottle-valve for operating'them positively in both directions, substantially as described.

12.7The combination, with a pressure-regir lating cylinder having apiston or uid chamber on one side and a yielding medium on the opposite side of said pist-on and Within the `cylinder, of a-throttle-valve and a relier'-- valve connected tosaid piston by a rod having an adjusting mechanism at both ends, substantially :ts-described. Y

3. A prcssuriz-regulating cylinder having a fluid-chamber, a, piston, and a tubular piston-rod, 'in combination with a spring andan adjustable glandengaging 'with one cud of said cylinder for compressing said spring,slib stantially asshown and described.

4. A pressure regulating cylinder having auidchamber, a piston, and a,v tubular lpiston-rod, in combination with a spring, fau.` ad-i instable gland engaging with one end ol' said cylinder, andan adjustable rod connected to the piston, a throttle and arelief valve,`subst/antially as described, 4

f 5. A prcssuie-regulating cylinder, in combination with a. throttie-val1/c,'a relif-valve, and a rod adjusted Within 'the hollow rod ot' the piston of said cylinder, extending .t'roin fand connecting said piston'with said valves,

rio

6. A pressure-rcguiatlng cylinder, in conibination with a piston, a spring resting upon the pistou, an adjusting-gland, a relief-valve,

` rg0 adjusting mechanism at both ends connecting the piston and the valves, substantially as d o- Scribcd.

7. A pressure regulatingcylinder haring a pistou provided with a tubular rod extending through onel end of said cylinder, and an operating-wheel secured thereto p rovidcd with a threaded ja-pcrturc, in combination with a screw-threaded rod extcndiug'iuto said tubular piston-rod and connected to a throttlevalve, substantially as described. S. A prcssureregulating cylinder having n, piston provided with ft tubular rod having In testimony whereof l nx my signature in an operatingwheo attached thereto, and n presence of two witnesses. rod connected to said piston and to a. valve or 1 f 1 r valves, in combination with an exernnlylEm MUGARTHS" threaded gland provided with :1n operating whee, and a, spring bnbweon said pist/on and Corrections in Letters Patent No. 385,941.

It is hereby certified ahnt in [1c-11ers Intcnt No. 385,941, gra-umd July l0, ifi-SS, upon the applimltnn nf lfvlix McCarthy, ul' Pottstown, lc||||s \'l\'ani.'\, fur an imprmen'lenh in Slm-d :nud lrnssun; I-lvgulnturs for Blowing Engines, errors appear in the printed n line Si", the comma spmzilcntinu requiring the following correutons, viz.' Ou page 2,

rvlef-vnlwrshould he xrrckcn out und in line SS sn'me 1a e acomma.

and that the said Letters Patent after ilu! word should hv ihm-rml :meer Llm. word tylrrnllew'nlref should blrvad with these corrections thi-rein that. the same. may (-.oxlfurn-l to the recrd of the uns@ in Illu Patr-ui Ull'cv.

Signe-d, cnunrvrsiglml, :md .Q1-:11nd this Vith dany nl' July, A. l), 1858.

D. L. HAWKINS,

.4 assistant Secretary :gf Mc Interior.

Countursigned BENTON J. HALL,

(-mmuisxuner nf Patents. 

